Stella’s father is Spanish. Stella’s maternal grandfather was of English, as well as Welsh, Scots-Irish (Northern Irish), Irish, and Scottish, descent. Stella’s maternal grandmother is of one half Swedish, one quarter German, and one quarter Norwegian, descent

Stella’s paternal grandparents are José Domínguez (the son of Bartolomí Domínguez and Isabel) and Ana Banderas Gallego (the daughter of Rafael Banderas and Francisca Gallego).

Stella’s maternal grandfather was Peter Atwill Griffith (the son of Benjamin Elmer Griffith and Hilda Corine Atwill). Benjamin was the son of William Thomas Griffith and Rosa Bond. Hilda was the daughter of Robert Clarence Atwill and Lucy Jane McClure.

Stella’s maternal grandmother is actress Tippi Hedren (born Nathalie Kay Hedren, the daughter of Bernard “Ben” Carl Hedren and Dorothea Henrietta/Henriette Eckhardt). Bernard was born in Minnesota, the son of Swedish parents, Mattias/Mathias Johnson Hedren and Wilhelmina/Vilhelmina “Winnie” or “Mima” Maria Flygare. Dorothea was the daughter of Charles “Charley” Eckhardt, who was of German descent, and of Julia Strand, who was of Norwegian origin.